Rchr
J-GLOBAL ID：202401000812009635
Update date: Dec. 23, 2024
Asahara Takashi
アサハラ タカシ | Asahara Takashi
Affiliation and department：
Job title：
Assistant professor
Homepage URL (1)：
https://www.cc.okayama-u.ac.jp/~asahara/
Research field (3)：
Medical systems
, Quantum beam science
, Radiology
Research keywords (4)：
CT
, Radiation Measurement
, Photon counting CT
, Dosimeter
Research theme for competitive and other funds (17)：
- 2025 - 2027 フォトンカウンティングCTで生成した定量画像による冠動脈プラークの評価手法の確立
- 2024 - 2027 Development of quantitative analysis technology for objects using photon-counting X-ray radiography and derivation of quantitative indicators of bone strength
- 2024 - 2026 X線減弱情報の定量解析が可能な光子計数型CT装置の歯科法医学的利用に向けた研究
- 2024 - 2025 実効原子番号画像の歯科法医学的利用を目指したフォトンカウンティングCTの応用研究
- 2024 - 2025 最新鋭X線CT装置を用いた冠動脈プラークの石灰化解析手法の開発
- 2024 - 2025 X線遮蔽体の医療用X線CT検査利用における遮蔽率評価手法の開発
- 2023 - 2024 最新鋭X線CT装置で生成可能な実効原子番号画像の法医学的な応用研究
- 2023 - 2024 柔軟性かつ通気性を持つビスマス粒子混合型X線遮蔽体の開発
- 2023 - An active-type personal dosimeter having functions to derive both incident direction and absolute dose of scattered X-rays during clinical X-ray examinations
- 2023 - An active-type personal dosimeter having functions to derive both incident direction and absolute dose of scattered X-rays during clinical X-ray examinations
- 2023 - A wearable active-type dosimeter having novel functions to derive both incident direction and absolute dose of scattered X-rays during IVR procedures
- 2020 - 2020 医療従事者の被ばく低減を促すためのリアルタイム式被ばく線量計
- 2019 - Photon counting technique: How to analyze a novel quantitative image? (共同演者)
- 2019 - Precise dose calibration method of OSL dosimeter with help of X-ray spectra toward exposure dose evaluation of eye lens
- 2019 - Actual dose measurements of assistant during pediatric X-ray examination with a precisely calibrated optically stimulated luminescence dosimeter
- 2018 - Phantom study toward accurate measurement of eye lens dose exposure of operator during transfemoral cardiac catheterization using fluoroscopy examination with an OSL dosimeter
- 2016 - 第72回日本放射線技術学会総会学術大会学生派遣
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Papers (36)：
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Takashi Asahara, Shunsuke Okada, Hiroaki Hayashi, Tatsuya Maeda, Rina Nishigami, Daiki Kobayashi, Chihiro Kurose, Natsumi Kimoto, Sota Goto, Miki Hisatomi, et al. Helpfulness of effective atomic number image in forensic dental identification: Photon-counting computed tomography is suitable. Computers in Biology and Medicine. 2025. 184. 109333-109333
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Rina NISHIGAMI, Daiki KOBAYASHI, Natsumi KIMOTO, Takashi ASAHARA, Tatsuya MAEDA, Tomonobu HABA, Yuki KANAZAWA, Shuichiro YAMAMOTO, Hiroaki HAYASHI. Optimization of energy windows to calculate quantitative X-ray images using an energy-resolving photon-counting detector: A simulation study. Radiation Physics and Chemistry. 2024
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Hiroaki Hayashi, Tatsuya Maeda, Kazuki Takegami, Rina Nishigami, Daiki Kobayashi, Takashi Asahara, Sota Goto, Natsumi Kimoto, Yuki Kanazawa, Kazuta Yamashita, et al. A suitable procedure of dose reduction factor measurements of X-ray shields during computed tomography examination - The importance of considering positional changes of an X-ray tube. Radiation Physics and Chemistry. 2024. 222. 111880-111880
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Tatsuya Maeda, Hiroaki Hayashi, Miku Ando, Rina Nishigami, Daiki Kobayashi, Takashi Asahara, Sota Goto, Natsumi Kimoto, Kazuki Takegami, Kazuta Yamashita, et al. Effectiveness of an X-ray shielding sheet with lower shielding ability to enable both bone mineral density determination and morphological diagnosis. Radiation Measurements. 2024. 107219-107219
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Takashi Asahara, Hiroaki Hayashi, Tatsuya Maeda, Daiki Kobayashi, Rina Nishigami, Sota Goto, Miku Ando, Natsumi Kimoto, Yuki Kanazawa, Kazuta Yamashita. Evaluation of lower detection limit and performance analyses related to the incident angle of X-rays and absolute dose using a triple-type dosimeter. Radiation Measurements. 2024. 175. 107148-107148
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MISC (1)：
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淺原孝. Mathematicaで広がる研究の可能性 -医療放射線技術分野におけるデータ解析-. ソフトウェア導入事例. 2024
Patents (4)：
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CT撮影に用いる放射線遮蔽体の性能評価方法
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X線CT検査における被曝線量実測値をCT画像を援用して解析するシステム
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X線CT検査における被曝線量実測値をCT画像を援用して解析するシステム
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放射線線量計
Books (3)：
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Impact of Blurring Correction Method in Quantitative Image Analysis Using Energy-Resolving Photon Counting Detector (ERPCD)
Springer 2024 ISBN:9783031645211
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医用X線の物理 (特集 整形外科医の職業被曝)
2021 ISBN:9784003306406
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Photon counting detectors for X-ray imaging: Physics and applications
Springer 2021 ISBN:9783030626808
Lectures and oral presentations (94)：
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Clinical study of patient surface dose measurement taking into consideration the differences of the X-ray incident angle during chest CT examination
(24th Asia-Oceania Congress of Medical Physics (AOCMP) 2024)
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Pulse Pile-up Correction of Objects with Various Atomic Numbers for Clinical Applications Using a Photon Counting Detector
(The 2024 IEEE Nuclear Science Symposium and Medical Imaging Conference 2024)
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System design to realize functional and conventional images during single X-ray irradiation using a photon counting detector
(The 2024 IEEE Nuclear Science Symposium and Medical Imaging Conference 2024)
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フォトンカウンティングCTにおける耳小骨画像の再構成関数の検討
(第1回 日本放射線医療技術学術大会 2024)
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Photon Counting Detector CTを用いた冠動脈プラークの解析手法の提案
(第20回 中四国放射線医療技術フォーラム 2024)
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Education (3)：
- 2019 - 2023 Kanazawa University Graduate School of Medical Science, Division of Health Science, Doctoral course
- 2017 - 2019 Tokushima University Graduate School of Health Sciences Health Sciences, Master's course
- 2013 - 2017 Tokushima University Faculty of Medicine School of Health Sciences, Major in Radiologic Science
Professional career (1)：
- Doctor of Philosophy in Health Science (Kanazawa University)
Work history (4)：
- 2024/04 - 現在 Okayama University, Japan Department of Radiological Technology, Faculty of Health Sciences Assistant professor
- 2023/04 - 現在 Kanazawa University Institute of Medical, Pharmaceutical and Health Sciences, Faculty of Health Sciences
- 2018/04 - 2024/03 Okayama University Hospital, Japan Division of Radiology, Medical Support Department Radiological technologist
- 2017/05 - 2018/02 医療法人社団自尊会 整形外科たかおクリニック 診療放射線技師 (非常勤)
Awards (8)：
- 2024/06 - Cyber DECT Conference 優秀賞 フォトンカウンティングCTを用いた実効原子番号画像による非金属歯科材料の識別
- 2024/05 - 第80回日本放射線技術学会総会学術大会 座長推薦優秀発表賞 Discrimination of non-metal dental material using photon counting CT toward identifying human remains
- 2024/02 - ECR2024, European Congress of Radiology Scientific Exhibition Jury Certificate of Merit Award Direct dose measurement method during chest CT examination by taking into consideration the X-ray incident direction
- 2023/04 - JRC2023, 2nd International Conference on Radiological Physics and Technology (ICRPT) Outstanding Presentation Award A novel function for wearable dosimeters to determine both incident direction and absolute dose of X-rays during IVR procedure
- 2020/12 - 岡山大学病院 楷の木賞 CT・MRI画像診断・手術支援解析チーム
- 2019/12 - RSNA2019, Education Exhibit Presentation Certificate of Merit Award Photon counting technique: How to analyze a novel quantitative image?
- 2019/04 - 第75回日本放射線技術学会総会学術大会 座長推薦優秀発表賞 Actual Dose Measurement of Assistants while Positioning Patients during Pediatric X-ray Examination Using a Small-type Optically Stimulated Luminescence Dosimeter
- 2018/06 - 第45回日本放射線技術学会秋季学術大会 座長推薦優秀発表賞 Proposal of Accurate Calibration for Measuring Eye Lens Dose of the Operator during Transfemoral Cardiac Catheterization with Fluoroscopic System Using an OSL Dosimeter
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Association Membership(s) (2)：
Japan Society of Medical Physics
, Japanese Society of Radiological Technology
